Die (manufacturing)

ing machining and polishing requirements. As some small portion of metal may leak between the mating seams of the die this can result in a sharp edge of metal called flash, which must be removed by grinding and buffing. For small metal toys the term die cast is generally considered a mark of quality, especially when compared to the cheaper stamping of lithography sheet metal, or bare stamped metal later painted.

Thread cutting

Another device also called a die is a Taps and Dies for making screw on rod stock. This device may also be used to restore damaged threads - a method called chasing. (Other methods are generally used to produce machine screws and small bolts in quantity — they are formed by a process called rolling.)

Wire pulling

Wire-making dies have a hole through the middle of them. A wire or rod of Steel, copper, or other metals or alloy, enters into one side and is lubricated and reduced in size. The leading tip of the wire is usually pointed in the process. The tip of the wire is then guided into the die and rolled onto a block on the opposite side. The block provides the power to pull the wire through the die.

The die is logically divided into a few sections. First is an entrance angle that guides the wire into the die. Next is the approach angle which brings the wire to the nib which facilitates the reduction. Next is the bearing and the back relief. Lubrication is added at the entrance angle. The lube can be in powdered soap form. If the lubricant is soap, the friction of the drawing of wire heats the soap to liquid form and coats the wire. The wire should never actually come in contact with the die. A thin coat of lubricant should prevent the metal to metal contact.

For pulling a substantial rod down to a fine wire a series of several dies is used to obtain progressive reduction of diameter in stages.

Standard American wire gauges used to refer to the number of dies through which the wire had been pulled. Thus, a higher-numbered wire guage meant a thinner wire. Typical telephone wires were 22-gauge, while main power cables might be 3- or 4-gauge.

Fiber optics

Methods similar to wire pulling are used to pull a glass rod down into a fiber for fiber optics use. In this case the initial rod will be composed of two or more layers of glass with differing refractive index so that the beam of photons remains in the center of the fiber, minimising losses due to optical leakage.

External links

FAQ about Die Castings


Home Articles Construction Tools Woodworking Store Tools Furniture Bathroom Flooring	Die (manufacturing) ing machining and polishing requirements. As some small portion of metal may leak between the mating seams of the die this can result in a sharp edge of metal called flash, which must be removed by grinding and buffing. For small metal toys the term die cast is generally considered a mark of quality, especially when compared to the cheaper stamping of lithography sheet metal, or bare stamped metal later painted. Thread cutting Another device also called a die is a Taps and Dies for making screw on rod stock. This device may also be used to restore damaged threads - a method called chasing. (Other methods are generally used to produce machine screws and small bolts in quantity — they are formed by a process called rolling.) Wire pulling Wire-making dies have a hole through the middle of them. A wire or rod of Steel, copper, or other metals or alloy, enters into one side and is lubricated and reduced in size. The leading tip of the wire is usually pointed in the process. The tip of the wire is then guided into the die and rolled onto a block on the opposite side. The block provides the power to pull the wire through the die. The die is logically divided into a few sections. First is an entrance angle that guides the wire into the die. Next is the approach angle which brings the wire to the nib which facilitates the reduction. Next is the bearing and the back relief. Lubrication is added at the entrance angle. The lube can be in powdered soap form. If the lubricant is soap, the friction of the drawing of wire heats the soap to liquid form and coats the wire. The wire should never actually come in contact with the die. A thin coat of lubricant should prevent the metal to metal contact. For pulling a substantial rod down to a fine wire a series of several dies is used to obtain progressive reduction of diameter in stages. Standard American wire gauges used to refer to the number of dies through which the wire had been pulled. Thus, a higher-numbered wire guage meant a thinner wire. Typical telephone wires were 22-gauge, while main power cables might be 3- or 4-gauge. Fiber optics Methods similar to wire pulling are used to pull a glass rod down into a fiber for fiber optics use. In this case the initial rod will be composed of two or more layers of glass with differing refractive index so that the beam of photons remains in the center of the fiber, minimising losses due to optical leakage. External links FAQ about Die Castings
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